# Mechanical Principle

graph TD;
Mechanics-->Gear & Non-transmission & transmission

@DH3868
:::success
## Gear
1. [Gear](https://hackmd.io/xsIr7c_pT2O4j_sP9mZIIw)
2. [Gear Train](https://hackmd.io/DA-th1jsTpaFTdV5ClhNGg)
3. [Involute equation](https://hackmd.io/qrbtkTHeTF6f5h4qo1nNlg)
4. [Involute Polar coordinates](https://hackmd.io/NaBApRhMRaKwCsL3q4DGiw)
5. [Gear geometry](https://hackmd.io/nNTbcwM1QwKAfn8iUV9jmQ)
6. [Special Angle](https://hackmd.io/w5UtQQXtQHa8XkUjtg_dhQ)
:::
:::info
## transmission
1. [Sprocket](https://hackmd.io/Eay6E5v5R4-ZKWVAXOUwBg)
2. [Thread](https://hackmd.io/hs_0lyDbQWuBlgXs_fsyWQ)
3. [pulley](https://hackmd.io/rjtIcDkvQg6TQqdSiROpIg)
4. [Belt pulley](https://hackmd.io/bZZKmBO8R1Sna_tT4tdTlw)
5. [Cam and follower](https://hackmd.io/fjU5kTAOSkyrNmgUAOMiTw)
6. [Friction wheel](https://hackmd.io/NTLQLLo4RCm3TYxF74Qazg)
:::
:::danger
## Non-transmission
1. [bearings](https://hackmd.io/kr-Y1WQ5QI6LCw2clxG00g)
2. [Keys and Pins](https://hackmd.io/Ynp_cMJuT-SbVN9TU4orzw)
3. [Spring](https://hackmd.io/aC_qUFVlTi-d1RLCirk0QQ)
4. [linkage](https://hackmd.io/0TsuNxjwRuWajJBKoKfIVQ)
5. [Periodic motion mechanism](https://hackmd.io/2maCmRV_SfODoxMe0w2sqg?view)
6. [brakes](https://hackmd.io/GRDtVgJrQ1mfdcqJlQP-6Q)
:::
:::spoiler more
[Machining](https://hackmd.io/SSySj7JbSdCifJuPgZBe6w)
[Engineering materials](https://hackmd.io/3lLmMXYERkuKVx31M8H4oA)
:::